
This is a 125GB hard drive, which is only slightly larger than a regular flash drive. It worked plug and play on my system (windows 7) and although I don't have a USB 3.1 I still have what I consider above average read/write speeds. (I created an 18GB file in about 3 minutes.) On USB 3.1 it can take less than a minute. If you buy this I hope you are as happy with it as I am and thanks for taking the time to read my review!

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